games-fps/yamagi-quake2: new package

games-fps/yamagi-quake2: new package

This is the Yamagi Quake II Client, an enhanced version of id Software's
Quake II with focus on offline and coop gameplay. Both the gameplay and
the graphics are unchanged, but many bugs in the last official release
were fixed and some nice to have features like widescreen support and a
modern OpenGL 3.2 renderer were added. Unlike most other Quake II source
ports Yamagi Quake II is fully 64 bit clean and is still actively
maintained.

Closes: https://bugs.gentoo.org/314751